The Sivatherium went extinct sometime in the last couple million years here on Earth, though some paleontologists have interpreted some cave paintings as representing them. But in the World of Names it survived the Flood. Or maybe it won’t survive the Flood, if it hasn’t happened yet.
So, naturally, Earthen-Beings gonna Earthen Be. They strap bundles of cloth and grain to them to carry it long distances so they can trade for glass and fruit.
This is the merchant Anegeb. They’ve been sent on their first solo trading mission, branching off from their larger caravan on a side mission to trade betel nuts in a small town, and bring back something to the caravan that will surprise and delight them.
They’ve just crossed a river and almost lost some of their trading goods. They’re salvaging what they can. But their mount, Degech, is eager to get back to walking.